I lost my eldest son in 1998 to Chronic Mylogus Leukemia just before his 25th birthday. He too, never gave up and fought to the end. His courage (like your son's) gave me strength I never knew was in me. He gave me the determination to live on and be a much better person than I knew I could be. I think of him everyday, and miss him, but know that he would lose all respect for me if I fail to live fully for every day that I might have. I have learned to embrace the following thought from Marcus Aurelius, Emperor of Rome and Stoic philosopher.
“Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones.”